Answer:
17 7th graders
Step-by-step explanation:
grd 8 is x, grd 7 is y
x+y=53
x=3y-15
use substitution: (3y-15)+y=53
4y-15=53
4y=68
y=17
Answer:
$7.94
Step-by-step explanation:
All you have to do is add the prices of both of the bought items.
$3.15 + $4.79 = $7.94
(PLEASE MARK ME AS BRAINLIEST!!!)
The modified recipe will make 14 servings.
Step-by-step explanation:
Given,
Eggs used = 3
Servings made = 6
Ratio of eggs to servings = 3:6
Eggs used in modified recipes = 7
Let,
x be the number of servings = x
Ratio of eggs to servings = 7:x
Using proportion;
Eggs to servings :: Eggs to servings
3:6::7:x
Product of mean = Product of extreme

Dividing both sides by 3

The modified recipe will make 14 servings.
Keywords: ratio, proportion
Learn more about proportion at:
#LearnwithBrainly
Answer:
a. 30
Step-by-step explanation:
There’s a property that’s says that when 2 lines are parallel and an other is secant then if the alternate interior angle are the same . So I think that’s it I’m really sore if it’s total nonsense but I tried my best .
The factors of thirty are
1,2,3,5,6,10,15,30